ExcelRW error Handling

Hi.. I''m Using ExcellRw , My question If I want to open Excell file and If the file is already opened then a run time error will be displayed , How I can Check if there is an excel file is opened before opening a file , here is an example about the case : ------ Dim Proc As New Process Proc.StartInfo.FileName = "D:\woquat\sample_bor1.xls" Proc.Start() ------- I want to check before opening the file if the excell file opened or not ?

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